Replacement oven units



Jan. 12, 1965 J. J. JAs|oNowsK\ 3,165,525

REPLACEMENT ovEN UNITS Filed May 9, 196s 2 sheets-sheet 1 F157 FEE .70'

yJam.'12, 1965 J. J. JAsloNowsKl REPLACEMENT ovEN UNITS 2 Sheets-Sheet 2Filed May 9, 1963 IIHIII" IIIIIIHIIII..

F1515 HHHI United States Patent O 3,165,626 REPLACEMENT OVEN UNIESJoseph J. Jasionowski, Niles, Ill., assigner to Ferro Corporation, acorporation of Ohio Filed May 9, i963, Ser. No. 279,278 3 Claims. (Ci.llh-462) This invention relates in general to electric heating units,and more particularly to replacement bake and broil heating units andmeans for mounting them in an oven.

Several ways of installing bake and broil units in a range oven areknown in the prior art. For example, it is known to provide the rearoven wall with central openings, one located adjacent the top of thewall for the broil unit, and another located at the bottom of the wallyfor the bake unit. In other ovens it is conventional to provide anopening adjacent one side of the rear oven wall at the top and thebottom to mount the broil and bake units for swiveling movement withrespect to the openings. It is also known to provide openings in theoven rear wall on both sides at the top and the bottom tor ,Aaccommodate generally U-shaped broil and bake units."

The general purpose of the present invention is to provide replacementoven units which are capable of being mounted in each of the ovenconstructions set forth above.

An object of the present invention is the provision of mounting meansfor a replacement oven unit which is capable of securing the oven unitto an oven wall regardless -of the mounting openings already present inthe wall.

Another' object of the invention is to provide a new and improvedmounting means for a heating unit which will allow the unit to beinstalled or replaced from the front of the oven.

Still another object of the present invention is to provide mountingmeans for replacement oven units which will allow the units to be movedin the oven so that the loven walls may be easily cleaned.

A `further object of the present invention is to provide mounting meansfor a replacement `oven unit which present -smooth planar surfaces thatare easy to clean.

A still further object of the-invention is to provide a replacement ovenunit which is simple in construction, efficient in operation, welladapted for its intended purposes, and relatively inexpensive tomanufacture and maintain.

Other objects and advantages of the invention will become readilyapparent from the following detailed description taken in connectionwith the accompanying drawings, in which:

FIGURE 1 is a perspective view of an oven broken away showing a heatingunit mounted in accordance with the present invention; f

FIGURE 2 is a view taken substantially as shown along line 2 2 of FIGUREl;

FIGURE 3 is a view similar to FIGURE 2 showing the heating unit housingin a pivoted position;

FIGURE 4 is a sectional view taken substantially as shown along line 44- of FIGURE 2;

FIGURE 5 is a front elevational view of a mounting bracket used in thepresent invention;

FIGURE 6 is a front elevational view of another mounting bracket used inthe present invention;

FIGURE 7 is a sectional view taken substantially as shown along line 7 7of FIGURE 5;

FIGURE 8 is a sectional view taken substantially as shown along line S-Sof FIGURE 5;

FIGURE 9 is a perspective view of an oven broken away showing a modifiedform of a heating unit mountmg;

lhb Patented Jan. l2, 11965 ice FIGURE 10 is a front elevational view ofan oven rear wall using the heating unit mounting means shown in FIGURE9, with the heating element broken away for clarity;

FIGURE ll is a front elevational View of an extension mounting bracket;and

FIGURE l2 is a sectional view taken substantially as shown along lineill-l2 of FIGURE l0.

While this invention is susceptible of embodiment in many differentforms, there is shown in the drawingsv and will herein be described indetail only specic embodiments, with the understanding that the presentdisclosure is to be considered as an exempliiication of the principlesof the invention and is not intended to limit the invention to theembodiments illustrated. The scope of the invention will be pointed outin the appended claims.

Referring now to the drawings, wherein like reference charactersdesignate like or corresponding parts throughout several views,reference numeral Ztl is used in FIG- URE l to indicate the oven in itsentirety. Oven 29 includes a top wall 2l, side walls 22 and 23a, a rearwall 24, and a bottom wall 25. Oven 20 is of the type having two centralopenings in the rear wall 24 adjacent the top and bottom walls,respectively, and is shown with a bake unit 26 secured to rear wall 24by mounting means 27. It should be understood that the forward end ofunit 26 is supported by any suitable means such as by legs 28.

The aforementioned lower central opening in wall 24 is shown at 29 inFIGURE 4. Mounting means 27 includes a substantially rectangular bracketSil (FIGURE 6) that is sufficiently large to overlie variously sizedopenings 29 found in different ovens. Bracket Sti is provided with apair of centralvertically spaced apart knock-out holes IFI that areadapted to receive toggle bolts, not shown, as is disclosed inco-pending application Serial No. 219,472, filed August 27, 1962. As isset forth in detail in that application, holes 3l are selectivelyusable, depending upon the position of the bracket relative to the wallaperture. If the wall aperture is too narrow to allow a toggle bolt topass therethrough, or is too wide to allow firm gripping action by thetoggle bolt, additional knock-out holes 32 adjacent the sides of bracketSil are used to secure the bracket to the oven wall. As is seen inFIGURE 4 metal screws 33 extend through the openings formed at 32 andengage oven wall 24 adjacent the sides of opening 29. Bracket 30 isprovided with an additional pair of laterally spaced apart openings 34that are adapted to receive therethrough the end portions of leads 35and 36 that are connected to a source of electrical energy, not shown.Openings 34 are provided with rolled over beads 37 and 38 to prevent thefraying of leads 35 `and 36. Bracket 3@ further includes spaced apartlongitudinal knock-out holes 39 for the insertion of a supplementalheating element if desired (not shown) and a pair of spaced apart holes4h, the purpose Iof which will hereinafter become apparent.

A modified form Of bracket Sti is illustrated in FIG- URE 5 and isadapted to be used in the aforedescribed type of ovens having openingsadjacent the top and bottom of the rear oven wall on one or both sidesof the wall. The central portion of bracket Sil is substantiallyidentical with bracket 30, and common elements have been indicated withprimed numerals in FIGURES 5, 7 and 8. Bracket Sil is substantiallylonger than bracket 30 and is provided at its outermost ends withhorizontally disposed longitudinal slots 4l. Adjustable extensionmembers 42 are provided at each end of bracket 30 to enable the bracketto accommodate ovens having variously sized widths. As is best seen -inFIGURE 8, bracket 30 is sub- 0 stantially U-shaped in cross sectionhaving legs 30a and 30h. Extension members 42 Iare also U-shaped incross section having leg members 42a and 42h which are sa telescopicallyreceived within legs Stia and 30h and ride therealong. Each extensionmember 42 is provided with a plurality of laterally spaced openings 43which are adapted to be selectively aligned with the corresponding slot41 at the desired laterally adjusted position. Screws 44 impale slots 41and holes 43 at the desired position, and nuts 45 secure the respectiveparts in place. Each extension member 42 is provided with atA least twolaterally spaced rows of knock-out openings 46. Knockout openings 46 arealso vertically spaced so as to be capable of being positioned over anymounting holes which may be present in the oven rear wall. It will bereadily understood that if it is not possible to align an opening 46with an existing oven wall hole, toggle bolts, not shown, may be passedthrough an opening 46 and into the adjacent rear wall oven aperture tosecure the bracket in position. In FIGURES 9 and 10, bracket 30' andextension brackets 42 are shown as used in an oven 20 having openings atboth sides of the top and the bottom of the rear oven wall indicated byreference numerals 47-5tl. As was discussed above, it should also bekept in mind that this type of mounting is also suitable for a heatingelement having side terminations. It will be noted that bracket 30 andextensions 42 cooperate to form an ei'lective shielding means for leads3S and 36.

Referring now to FIGURES 2-4, it will be noted that the end portions 51and 52 of the heating element terminate in a housing indicated generallyby reference numeral 53. Housing 53 includes a first U-shaped memberhaving a base 54 with apertures 55 aligned with bracket apertures 34 toadmit the ends of leads 35 and 36 into the interior of the housing. Itshould also be understood that base 54 is provided with a suitablecentral opening, not shown, that is aligned with openings 31 toaccommodate the toggle bolt, not shown. The tirst U-shaped member alsoincludes apertured sides 56 which receive therethrough the end portions51 and 52 of the heating unit. Bosses 57 surround the side memberapertures, and extend outwardly from sides 56 a sufficient distance toenableV them tobe crimped into secure gripping engagement with heatingunit end portions 51 and 52 so as to xedly mount the heating unitrelative to the housing. Base 54 is secured to a tlexible strip ofmetallic material 58 as by rivets, not shown, to provide hinge means forthe heating elements as will hereinafter become more fully apparent. Theupper end of strip 58 is secured to bracket 30 as by screws 59, whichpass through aforementioned holes 40, and the lower end is free ofbracket 3i) to be swingable relative thereto.

Suitable means, such as plates 65D and screws 61, are provided toelectrically connect leads 3S and 36 with ends 51 and 52 of the heatingelement. Tubes 63 of insulating material surround these connections.

Housing 53 further includes a second U-shaped member having a base 64abutting the ends of sides 56, and legs 65 positioned on the top andbottom of sides 56. The upper leg 65 is provided with an inwardly bentdownwardly struck portion 66 which is engageable with an upwardly opengroove 67 in each side 56 to provide means for locking the secondU-shaped member on the first U-shaped member. Itwill be readilyunderstood that g the second U-shaped member may be easily removed bymerely spreading legs 65, and when it is replaced it will snap intoplace due to the cooperation of portions 66 and grooves 67.

Referring now to FIGURE 12, where both a broil unit 68 and a bake unit26 are shown, it should be noted that the mounting 69 for the broil unit68 is substantially identical to the mounting 27 for the bake unit 26,except that the parts are reversed to allow broil unit 68 to pivotdownward with respect to the oven top surface 21. A magnet 7@ isprovided at the outer end of broil unit 68 to secure it to surface 21.

From the foregoing it should be apparent that what has been provided arereplacement oven units which are capable of being installed in `a widevariety of presently available ovens. The mountings for the unitspresent substantially Hat surfaces which are simple to clean, and

the units themselves are movable so as to allow the oven surfaces to becleaned. The heating units and their mountings are readily accessiblefrom the front of the oven for proper maintenance and repair. Thus itwill be appreciated that all of the objects of the invention have beenfully achieved.

I claim:

l. Means for securing an electrical heating unit to an veapertured wallof an oven comprising: a bracket having a flat face and being ofsutlicient size to cover the aperture in said wall, means for securingthe bracket in position overlying said aperture and with said facecloselyV k wall and through openings in said bracket, with said leadsterminating in said housing'and being secured to said connector, andmeans hingedly securing said housing to said bracket.

2. Apparatus of the character described in claim 1 in which said bracketis generally rectangular in shape and is provided with a short Wallextending from each side thereof normal to the plane of the face tospace said face from the apertured wall.

3. Apparatus of the character described in claim 2 including a pair ofchannel-shaped extension members extensibly secured to opposite sides ofthe bracket with the legs of the extension members extending in the samedirection and for approximately the same distance as the walls of thebracket, said extension members being adapted to overlie and protect theelectrical leads.

References Cited in the file of this patent UNITED STATES PATENTSAmmerman Mar. 29, 1960

1. MEANS FOR SECURING AN ELECTRICAL HEATING UNIT TO AN APERRTURED WALLOF AN OVEN COMPRISING: A BRACKET HAVING A FLAT FACE AND BEING OFSUFFICIENT SIZE TO COVER AND APERTURE IN SAID WALL, MEANS FOR SECURINGTHE BRACKET IN POSITION OVERLYING SAID APERTURE AND WITH SAID FACECLOSELY SPACED FROM SAID WALL, A SMALL COMPACT HOUSING HAVING AREMOVABLE COVER, SAID HOUSING DIMENSIONS IN A PLANE PARALLEL TO THEPLANE OF SAID WALL LESS THAN THE CORRESPONDING DIMENSIONS OF THE FIRSTOF THE BRACKET, AN ELECCTRICAL CONNECTOR MOUNTED IN SAID HOUSING, ASHEATHED ELECTRICAL HEATING UNIT HAVING TERMINALS TERMINATING IN